<h2>Comments</h2>
<pre><code># Single line comment
-- Single line comment
// Single line comment
/* Multi-line
comment */</code></pre>

<h2>Strings</h2>
<pre><code>"foo \"bar\" baz"
'foo \'bar\' baz'
"Multi-line strings
are supported"
'Multi-line strings
are supported'</code></pre>

<h2>Variables</h2>
<pre><code>SET @variable = 1;
SET @$_ = 2;
SET @"quoted-variable" = 3;
SET @'quoted-variable' = 3;
SET @`quoted-variable` = 3;</code></pre>

<h2>Operators</h2>
<pre><code>SELECT 1 && 1;
SELECT 1 OR NULL;
SELECT 5 & 2*3;
SELECT 2 BETWEEN 1 AND 3;</code></pre>

<h2>Functions and keywords</h2>
<pre><code>SELECT COUNT(*) AS cpt, MAX(t.pos) AS max_pos
FROM `my_table`
LEFT JOIN `other_table` AS t
WHERE `somecol` IS NOT NULL
ORDER BY t.other_col DESC</code></pre>
